I was looking through some old news on CJ on gamespot.co.uk and I thought I'd post in a few things that were in development but didn't end up in the final game:
"Weapons include wristblades, a net gun, the classic smart disc, a combistick, the plasmacaster and a spear gun."
"Enables you to hunt through an entire city, GTA style."
"Stealth moves such as hanging from ceilings and crawling on walls."
"Four vision modes including Prey scan which allows you to find weaknesses in your prey."
"The game begins in 1930 Chicago"
"First missions are completely stealth."
I'm still pretty annoyed that it's mission based and not a free-roam game. It would have made it so much better!
The game does begin in 1930's. Whether or not that city is actually based on chicago i have no idea.
You can crawl across walls and ceilings if they're grated. A pred crawling on concrete makes no sense.
You can scan your prey for their weaknesses.
Oh and it was Fox who made them hurry up. Not exactly the developers fault.